Advanced Mathematics Primary 3 Data Analysis

The bar graph shows the number of books read by 4 students in a month: A = 18, B = ?, C = 22, D = 15. The total is 80 books. The four students set themselves a new target equal to twice the original average. Find the new target per student.

A 160
B 40
C 20
D 25
Show Worked Solution

Worked Solution

Step 1: Find the original average. Average = 80 ÷ 4 = 20 books per student. Step 2: Twice the average = 2 × 20 = 40 books per student. Answer: 40

Correct answer: 40

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